MUSCAT: Researchers from German University of Oman (GUtech) and RWTH Aachen University in Germany found evidence for a land-uplift along the Omani coast and past tsunami that may have occurred in the 20th century and earlier. "Along the coast we discovered isolated rocks of more than 20 tons that have been moved by sea waves. We are sure that these blocks were not moved by hurricanes that affected the coastlines in the past years, therefore we expect that they are of tsunamigenic origin," said Prof. Dr. Klaus Reicherter, Department of Neotectonics and Natural Hazards at RWTH Aachen University.
During their ten-day field-work in February the researchers were scanning the Al Hajar Ash Sharqi Mountains between Quriyat and Sur with the so-called LiDAR (Light detection and ranging instrument). "With the help of this instrument, we would like to reveal the evolution of the coastline and the mountains. In Fins the long-term evolution is documented by coastal rock terraces or raised beaches," said Professor Dr. Goesta Hoffmann, Associate Professor at the Department of Applied Geosciences at GUtech.
These beaches were formed thousands of years ago and uplifted to more than one hundred meters above the present sea-level. These raised beaches form rock terraces that are easily recognizable from the highway between Sur and Quriyat.
"They resemble a giant staircase. In some terraces made of limestone, shells and sand deposits indicate the former marine environment in which they were formed thousands of years ago. The group of researchers also found different sea shells on top of the terraces, around 2 kilometers away from the sea and 100 meters above the sea level.
"The 3-dimensional models showcase the fine details of the surface of the rock terraces," explained Prof. Hoffmann.
Results of the research showing a 3-dimensional computer model with accuracy of 5 millimeters are expected by the end of the year. "The final results of our research can be used to mitigate potential damages of future tsunamis in this region. Knowledge of the long-term evolution of the coastline is essential in the context of global warming and associated sea-level changes," said Prof. Hoffmann. According to scientists the global sea level may rise up to one meter in the next one hundred years.
GUtech offers state-of the art research facilities where research goes hand in hand with education. "From an early stage of their studies, we involve the students in applied research. They actively support our work and learn different kind of research methods," said Professor Hoffmann. The first batch of BSc Applied Geosciences students will graduate next year. Some of them are interested in conducting their Bachelor thesis within the context of the joint research project of the Omani coast.
The group of Geoscientists has been studying the coastal evolution of Oman. The research project has been sponsored by the German Research Foundation (DFG).
GUtech offers a four year BSc study-programme in Applied Geosciences and a part-time MSc programme in Petroleum Geoscience. The language of tuition at GUtech is English.
-Ends-
© Press Release 2011
